Steal range refers primarily to CO, BTN, and SB opens with the goal of winning blinds without showdown or playing in position with range advantage. BTN holds the widest steal range in poker (40-55% of hands), followed by CO (25-35%) and SB (35-45% to complete). Steal range composition is determined by hand equity, in-position equity realization, and the expected blind defense frequency. In exploitative poker, steal ranges can be expanded or contracted based on how blinds are defending; against passive defenders, expanding the steal range carries immediate high EV.